I think Kickstarter is good for some stuff - especially in the 'entertainment space' - board games, video games, comic books, etc. I.e. endeavours where the target customer base is niche and difficult to estimate. This may result in a company struggling to secure real investor confidence and push them to crowdfunding. Another area would be projects where the market is controlled by big companies - making it difficult for a start-up to punch through and again, scare away investors - pretty much anything technology, like smart watches.
You're talking about a pair of trousers. I find it a bit baffling how someone could say that they developed a revolutionary pair of trousers. The customers are well-defined and easily quantifiable and no one 'controls' the market. The page looks like a lot of marketing BS and appears to be taking advantage of FOMO - the fear of missing out - i.e. 'pre-order now to avoid disappointment' and 'grab it at this price, before it doubles'. I would personally steer away - but it's not my money.
Reminds me of a situation I had in a ski shop - where a salesman told me that a jumper I was trying on was constructed using 'spacesuit material, that NASA used to land on the Moon'. When I pressed him turned out he meant spandex
